Examples of Environmental Query Systems without Blackboard or Behaviour Trees

Are there any examples of using EQS without the blackboard or behaviour trees?
Preferably in C++.

Have a look at the EQSTestingPawn

https://github.com/EpicGames/UnrealEngine/blob/76085d1106078d8988e4404391428252ba1eb9a7/Engine/Source/Runtime/AIModule/Private/EnvironmentQuery/EQSTestingPawn.cpp